             (-deref [_] ctx)])
       IGraphExecutor
       (stop! [_] (err/unsupported!))
-      (notify! [_ evt] (err/unsupported!))
+      (notify! [_] (err/unsupported!))
       (include-vertex! [_ v] (err/unsupported!))
       (execute!
         [_]

            (-deref [_] ctx)])
      IGraphExecutor
      (stop! [_] (err/unsupported!))
      (notify! [_ evt] (err/unsupported!))
      (include-vertex! [_ v] (err/unsupported!))
      (execute!
        [_]

(defprotocol IGraphExecutor
  (execute! [_])
  (stop! [_])
  (notify! [_])
  (include-vertex! [_ v]))

(defn collect-pure
